we try to stop, not only infiltration, but exfiltration, where sewage would actually leak out of the pipe. the head is larger, so it breaks away the old pipe and allows the new pipe to come in behind it. griffin: we are saving about 67% of the cost of actually digging old pipe up. clyne: it's less invasive than an open-cut process, where you would open the whole trench up and replace the pipe. it's called "trenchless" technology, so... that's as good as it gets. griffin: we don't have to dig up everyone's yard, and we refurbish that pipe at a much-reduced cost. another technique, the cured-in-place lining. it's equivalent to putting a large sock through the existing sewer. we form a new pipe inside the old pipe, and therefore we seal up all of the defects that allow rainwater to come in. hunter: we repair about 730 leaks a month in our system. griffin: the improvements that we've made will make the environment better. we had approximately 1,000 overflows occur in 1999. today, we've reduced overflows by 45% to 50%. and it's going to continue to improve as we go forward with the rehabi

in operation shady rat is used by a remote operator to come in and manipulate their machine to exfiltrate data or perform some other desired action now and apparently there could be important data right these are in e-mail archives there could be government secrets because if you look at everybody that was attacked here they are government agencies defense contractors you have also various non-profits corporations even a media organization that does tell you that nobody's safe anymore these days but i think it's it's what's what's particularly difficult on the basis of this report is to know what take it and in fact sometimes even organizations that get hit by this kind of attack don't know what was taken and so there's the possibility that a great deal of sensitive information was lost there's also the possibility that i think was lost it's very difficult to know without doing a more thorough analysis of the networks that were penetrated themselves is that why nobody found out about a person to be perf i do years and that's just what they think they think that it could have been going on

they were exfiltrating, stealing, information including government secrets, design schematics, negotiations adversaries. >> and we're talking about defense, american defense. how high up does this go? what kind of information are they stealing? could it compromise us in some way? >> oh, absolutely. it goes very high. and there are plenty of examples of -- specific examples that have been made public of stealing the plans for delta rockets for the space shuttle, for new fighter jets, and then in some cases, even replicating their own versions of these technologies. >> and it seems like this latest round is much more nefarious than what we've seen even in past months when the senate site was hacked or pbs. what does it also say that mcafee was the one who really served as the last line of defense on this? that, you know, things weren't discovered before they were the ones to bring it up. >> well, a number of other firms have actually been tracking these same attacks for a while, but mcafee was just the first one to go public with the news. there's a lot of controversy within the industry abou